Impenetrable
Impenetrable adjective - Being beyond one's powers to know, understand, or explain.
Usage example: the mysteries of that religion are completely impenetrable to outsiders
Perplexing is a synonym for impenetrable in incomprehensible topic. In some cases you can use "Perplexing" instead an adjective "Impenetrable".
Nearby Words: impenetrability, impenetrably
Perplexing
Perplexing adjective - Lacking clarity of meaning; causing confusion or perplexity.
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Synonyms for Perplexing
Impenetrable is a synonym for perplexing in puzzling topic. You can use "Impenetrable" instead an adjective "Perplexing", if it concerns topics such as difficult to understand.
Mutual synonyms
Related pairs
- complex and impenetrable
- complex and perplexing
- difficult and impenetrable
- difficult and perplexing
- hard and impenetrable
- hard and perplexing
- abstruse and impenetrable
- abstruse and perplexing
- unfathomable and impenetrable
- unfathomable and perplexing
- obscure and impenetrable
- obscure and perplexing
- unclear and impenetrable
- unclear and perplexing
Cite this Source
Perplexing and Impenetrable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impenetrable/perplexing
Impenetrable & Perplexing. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impenetrable/perplexing>.
Perplexing or Impenetrable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impenetrable/perplexing.
Google Ngram Viewer shows how "impenetrable" and "perplexing" have occurred on timeline